Messages in this thread | | | Date | Wed, 14 Apr 2021 08:26:02 -0300 | From | Jason Gunthorpe <> | Subject | Re: [PATCH 2/2] iommu/sva: Remove mm parameter from SVA bind API |
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On Wed, Apr 14, 2021 at 02:22:09PM +0800, Lu Baolu wrote:
> I still worry about supervisor pasid allocation. > > If we use iommu_sva_alloc_pasid() to allocate a supervisor pasid, which > mm should the pasid be set? I've ever thought about passing &init_mm to > iommu_sva_alloc_pasid(). But if you add "mm != current->mm", this seems > not to work. Or do you prefer a separated interface for supervisor pasid > allocation/free?
Without a mm_struct it is not SVA, so don't use SVA APIs for whatever a 'supervisor pasid' is
Jason
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